Receptacle.



ERNST G'. K. ANDERSON, OF CHICAGO, ILLINOIS, .ASSIGN'OR T0 BENJAMIN ELECTRIC MANUFACTURING COMPANY, l?A CHICAGO,

ILLINOIS, a comoaarion or ILLINOIS.

aEcnrracLn.

Sp ecicationoi LLetters Patent.

Patented Nov. 6, 1917.

Application ledianuary 3, 19.16. Serial No. 69,982.

i To all whom t may concern.'

Be it known that I, ERNST G. K. ANDER- sON, a citizen of the United States, residing at Chicago, in the county of Cook. and State v of Illinois, have invented new and useful- Improvements in Receptacles,pf which the following is a full, clear, concise, and exact description, reference bein had to the accompanying drawing, forming a part ofthis specication. a

My invention relates to receptacles and more specically to receptacles in which the contacts are electrically dead until an insertible member is introdiicedv in the recep-ltacle.

Among the objects .of my invention is to provide such a receptacle which will be Asimple in construction and reliable in operation.

Further objects will appear from theI detailed description to follow taken in connection with the appended'claims.

In the drawings, in which I have shown one embodiment of my invention- Figure 1 is a face view of the open end of the receptacle; y F1Fig. 2 is a section on the line 2 2 of gig. 3 is a section on the line 3 3 of Fig. 1;

Fig. 4 is a side elevation of the base which l supports the binding terminal; .and

Fig. 5 is a plan view of Fig. 4.

Referring now to the drawings in detail, the receptacle shown comprises an inner insulating base 10 of suitable material such as porcelain, binding and conducting plates 11 secured to the base 10, clips 12 also secured to the base 10 for holding the parts of the receptacle together and securing them to an outlet box cover, an outer insulating base 13 'of suitable material such as porcelain secured in proper relative position to the base 10, and shell and center contacts 14 and 15 supported by the base 13. The base '10 is provided with apertures 16 through which the feed wires may extend to a position where they can be engaged by the binding screws 17 which are threaded into the plates 11. rlhese plates 11 are securely held on the base 10 by means of hollow rivets 18, the

lfor engagement with suitable contacts supported by the base 13. Y vThe base 10 is recessed at 2t) to provide clearance for the j nt' over ends'l9 and is also recessed at 21 to accommodate a conducting plate connected with the shell contact 14, as hereinafter described.' The base 13 is provided with an annular flange 21a which, when the device the cover plate of the outlet box, and with',

a center recess 22 to accommodatejthe l contact 14. A web or wall 23 the inner end of the base 13 and this web 1s provided with apertures 24 in which are slidably mounted the eyelets 25 which are extends across electrically and mechanically connected to the shell contact 14. 'This web 23 is also provided with an a erture 26 through which which secures the cen-v `'plate 33 is secured at its opposite ends tov the eyelets 25 and a leaf spring 34 of conducting material is located between the plate 33 and the plate 31 and normally holds the shell Contact 14 in its innermost position, as shown in Figs. 2 and 3.' The ends of this leaf spring 34 are biurcated as shown at 35 to straddle the eyelets \25 to hold the spring in.l position. 'The shell contact 14 is cut away as shown at 36 and 37 to avoid short circuiting. The center contact is provided with a stampedup portion 38 for' engagement ,with the corresponding center contact on the insertibleportion, and is provided with a contact finger 39' which extends through-the opening 28 in position to be moved to engagement with the bent over end 19 of one of the hollow-rivets.

The use ofvmy improved deviceis as follows: So long as the receptacle is empty -the tension in the center contact 15 will hold the `contact'nger 39 out of engagement with ico the hollow rivets 18 and the tension in the 60 isinstalled,extends through an opening in.

with the 'conducting plate 31 so that normally both the shell and center contacts are dead. When, however, a plug or lamp is screwed into the shell contact 14 its center contact will engage the stamped up portion 38 and force the contact finger 39 into engagement with the-hollow rivets 1 8 and will eyelets to slide in the opencausing the l causing the conducting plate 33 ings 2li and into engagement with the conducting plate 31. This establishes a circuit from one vof the binding screws 17 trough one of the conducting plates rivets 18', center contact 15, lamp orplug y circuit, shell contact, eyelets 25, conducting base and shell and center contacts supported thereby, said base having a web portion eX` tending across the inner end of said shell contact, said Shell contact being secured to said web portion and said web portion forming a backing for the center contact, and asupply contact, said center Contact comprising a leaf spring located in the path of an inserti-- Vble member to be moved thereby into contact withsaid supply contact, said web portion having an opening through which said center contact extends for engagement with said supplg contact. l I Y 2. receptacle comprising an insulating base and shell and center contacts supported thereby, and a supply contact, said center contact comprising a leaf spring located in the' path of an insertible member tobe ,moved thereby into contact with said supply contact, said base having two openings therein on opposite sidesy of the center, said center cont-act extending through one of said i. openings for engagement with said supply contact, and securing means for said center contact extending through the other pening. f

3. A receptacle comprising an insulating base and shell and center contacts supported thereby, and a supply contact, said basehaving an opening therein and means for supporting said shell contact for movement with respect to said base comprising a member secured to said shell contact and extending through said opening, and means whereby movement of said shell contact electrically connects it with said supply contact.

.4. A receptacle comprising an insulating thereby, and a supply contact, said base havspring 34 will hold itii'leiit of engagementA also drawy the shell contact 14C outwardlyto bear on the spring 34 and force the latter 11, one of the hollow4 base and shell and center contacts supported ing an opening therein and means orsupporting said shellcontact for movement with respect to said base comprising a member secured to said shell contact and slidably mounted in said opening, and means whereby-movement of said'shell contact electrically connects itl with said 'supply contact.

5. A receptacle comprising an insulating base and shell and centercontacts supported thereby, and a supply Contact, said base having tw0 openings therein on opposite sides of the center, and means for supporting said shell contact for movement with respect to said base comprising two members secured to said shell contact and Slidably mounted in said openings, and means whereby movement of said shell contact electrically connects it with said supply contact.

6. A receptacle comprising an insulating baseand'shell and center contacts supported thereby, and a supply contact, said Ibase having two openings therein on opposite sides of the center, and means for supporting said shelll contact for movement withv respect to said base comprising two members secured to said shell contact and slid'ably mounted in said openings, and means whereby movement of said shell contact electrically connects it with said supply contact, said -means comprising a conductor connecting said two members.

7. A receptacle comprising an insulating base and shell and center contacts supported thereby and a Supply contact, said base having an opening therein and means for supporting said shell contact for movement with respect to said base comprising a member secured to said shell contact and extending through said opening, means whereby movement of said shell contact electrically connects it with said supply contact,

and a spring for normally holding said shell contact in disconnected position.

8. A receptacle comprising an base and shell and center contacts supported thereby and a supply contact, said base having two openings therein on opposite lsides of the center, and means for supporting said shell contact for movement with respect to said base comprising two members secured to said shell contact and vslidably mounted in said openings, means whereby movement of said shell contact electrically connects it with said supply contact, said means comprising a conductor connecting said two members, and a spring bearing on said conductor to normally hold said shell contact in disconnected position.

9. 'A receptacle comprising an insulating base and shell and center contacts supported thereby and a supply contact, said base havf insulating iis members,. and a leaf spring bearing on said ERNST G. K. ANDERSON.

of said s ell Contact electrically connecte-Ht *f l A 5 with said supply Contact, said'means com- In Witness whereof, I have hereunto subprising a, conductor connecting said two. scribed my name. 

